Combined spark-plug primer, compression-indicator, and pressure-gage.



M. o. GEORGIA. COMBINED SPARK PLUG PRIMERJOMPBESSION INDICATOR, All) PRESURE GAGE.

V APfUf-ATIDI HLED JULY IL IN.

Paton'wd Nov. 27. 1917.

M O. GEORGIH MOSES o. GEORGIA; or rec'ronyvrpp s, N SYLWANIAQ -I"COMBIN-ED" SIPAI-RKJBLUG 231 113, 'eo PREssIoN-INmc 'roR, AND PRESSURE-GAGE.

Specification of Letters Ra'te'nt.

Patented Nov. 27,1917.

Agpljcajzion filed July 12, 1915 1ia ne ps es o 1 11 0 4 1 i may w em i lem e hat I, Mem n me, citizepuof the U itegl States, residing 2,1; Factoryville, in the county of VVyomtng State of Pem sy lvenie h ve invented certain new and improvements in Combined Spark- Plug Primers, (lom grie s- S1011 lee e t re en Pr ssu Gage e which the following is,a. specifieetipp, refere ng be e ee pe yi g d mmgs.

Th i lmi e r lat to eme embustio engines and particularly to spark plugsthenefor;

One object of this i ve tion is'tp povide e ei me s ie de e mi n h .der e ef eempe'e e in the ey l. e bf en internal combustiopi engine a r 1d.,thu detern g. Wh th there s leeie h ey inder-or valves.

Another object ievtq. p royidezcor 've ient means top gle'terr; lining whether .91. pet a ylinder i fii n A still. f grtl er object is to p goyide a.com.- bined spark plug end indicator for the purposes aboye describedend in this connection to proyid'e R SW-ltQh whereby the eleotrode of the spark may l e-short circuiled. A

Another object is to so form the combined spark pligg and indicator thet the spark plug, may be -used f or prir ing engine. I

A still further objeotis to so eo strl ct the compression h ding-tor that a. movable em e i hii delie i eee y th empres Wi hin t eyli dee ml f n ts .h fi ed e t e th it may be easilyr s he ebie ew l tepe er n the .e s- 9 th .f ll' wving dee rwfi Mylnventlon is illustrated in theecco h- P ns" dre en W i h, I

l ll l is er eel fie txon hro g c mbined. park plu en me -we gege constructed in eccordanee w th m .y V111:- e ie s, i r 'v g-12 an e d el ye iem he eljvn 1 n e tie le th lme .2 2.- e gFl'gi 1; F g i e e e ieee :P r p e we n w h section being taken on the li'ne3-3 of F g Fig. .4 a, fra entary see ienel iew h ough-fil ye e easi g 1 51 B iete he e ee rede il2, th ee ienbein ek tn ht angles to the. sectiop in Fig. 1. f

e i gIQQ: e e figure l fde gne th e F us ng p a h r plu t s ee heme me el e d ein t i r ys rew threaded 1" engagement with! the Walls of the cylinder 'A. 'Tlie 'base 10 leis the us a 02m. midis ed t he be gaged 'p'p'erjend by the screw-thwart ed m $1.-

D'iel eeid ivit i the a e nd el i v ee'e b the nut gland 1: is t eore or sleeve 12 of insulating material $110. as per-ee m n p ing 1 t rough this sleeve end extending downward into the. hollow hose is a tuhu'lar electrogleflesig} s l 35 th uppe p rt n bf h h is re, due d'i' 2ter e e ee F end preie h Ye d Lt'he ie ulete l2 nd i eri r y ee v w "thr a e tier n m n yf ii the up er extremity of {the electrode 13 is e yelv'e casing 18' having a rotatable Valve 19' agijaeeht its lower end e llld' a rotatable v l [2.01edi eent t pper il ed ee h he "elh 'fieeii prisie e em iyhi l he e .di met' iee Pee ge end ngh reby the "e it my; e tetetedit. Q t h t m .0? t Yel' l 19' re is .en. ,e ,e. e1 i e01? ie t i' .erm' 21 'Whiei: ad ted= t lee trir l 8e w th .t e le 1 11 1 wen t l-3 l -9'1 m d, to e tebli'e fl nmll im en thee-1 gb the e 1 I 'Ei n ih l tera y mm the eas ng .8 dispose between the velves 19 endj is a t b lar barrel 22 within whichoperates e d e h ad 2 Weret' ng in en l l g b ii P9125 h e n s di ieeed e eeiLePrin 26 which resists the outward n 'qvehlle tio the n'f il- The: le m'itx th b r l 2,5 s elj fl by, m w ,e @YI' IIAQY b p ug 7 The heriel'25 is longitudinally slotted'e's q t fi -e d eene e ed. tether te eed $5 18 i me ee 2. hen eget nl, .s t thr ug the lot-'2 eed hn l-ee .1w eemee with e li agist op 23 or plunger carrying at its outer 310 en e e x e Thieelit ie'meg ted compression within the cylinder of'the en ine for instance, the finger 29 en ages the ug 30 and the slide'moves outward against the force of the spring 26. Whenfhowever, this spring 26 forces the piston back, the spring 34 holds the slide from its return movement s'o'that the position of the slide on the graduated scale 33 may be readily seen. I 5 I The operation of my invention isas fol-j lows: Under ordinary circumstances, both of the valves 19'and 20 are "closed, the arm 21 in this case not contacting with the gland nut 11. Theelectrode '13 is connected to'a source of electricity as, for instance, the usual battery by means of conductor 35 in the usual manner. Under these circumstances the spark lu acts as an ordinary spark plug and 1 Is "all the function's thereof. -In order to prime the engine it is only necessary to turn both of the valves 19 and 20 to such position that the passages through'th'e valve stems alinejw ith the longitudinal passage through the valve casing 18 and the electrode whereupon fuel may be directed into the cylinderin the usual manner for priming.

In order to find if there is a leakage in the cylinder or the valves, the valve 20 is turned so as to close th PPer end of the passage 16 and valve 19 is'turned 'so' as to open this passage and, at the sam etime, short circuit the spark by reason ofthe engagement of the arm 21 with the gland nut 11. Under these circuniStances'the barrel 22 isopen to the bore 16 and if the indicator does not show full compression or the proper degree of compression when the engine is running, then there is leakage in the cylinder or valves. In orderto find .out if the cylinder is firing properly, the switch21 is closed and the degree of compression noted as directed for testin the cylinderfo'r' leakage. The valve 19 is t on turned just enough toopen the switch, that is to carry the arm 21 'out of'electrical engagement with the gland nut but without, however, closing the passage through the valve stem of the valve 19. If now the indicator does not register a higher pressure than it did when the switch was closed then the cylinder is'not firing.

Attention is particularly called to"tlie fact that this pressure gage which I'hav'e described registers the pressure for the rea son that when the slide moves forward or may be read afterward.

outward along the gage 33 it stays at its maximum position. so that the in dicator The slide can be moved back to zero by hand after the test is made.

While I have illustrated a construction which I believe to be particularly effective and thoroughly convenient, it is to be understood that I do not wish to limit myself to the exact details shown or to the exact arrangement of parts as it is obvious that many changes might be made in these details and in the arrangement without departing fromthe spirit of the invention.

What I claim is:

' 1. A spark plug having a duct extending through it, a pressure indicator mounted on the plug and connected to the duct, and a valve between the inner end of the plug and the pressure indicator to establish or dises'tablish communication between the duct and the pressure indicator.

. 2. A spark plug having a duct extending entirely through it and having a. pair of valves independently movable to establish or disestablish communication entirely through the duct and a pressure indicator disposed between 'said valves and operatively connected to the duct.

-3. A spark plug having a tubular electrode, a pressure indicator operatively connected to thebore of the electrode and in cluding a visible movable member, and means for establishing or disestablishiug communication between the pressure indicator and the .bore of the electrode.

' 4. A spark plug having a duct extending entirely therethrough, 'a pressure indicator ope ratively connected to the duct, and valves one on each side of the point of con nection of the duct to the pressure indicator whereby the duct may be opened for its entire length or whereby connection may be established or out off between the duct and the pressure indicator.

: 5. A' sparkplug'having a duct, an outer and an inner valve controlling passage through the duct, a pressure indicator mounted on the plug and connected to the duct between the valves, and means carried by' the inner valve'for short circuiting the spark plug whenthe inner valve is in open position.

6. A spark plug having a tubular electrode'and also having a valve casing into which the upper end of the electrode opens, a pair of valves' in said valve casing, a plunger chamber opening to the bore of the valve casing between the'valves, a scale, and anindicating member operatively connected tjo theplunger, and operating over said E bularelectrode, insulation betwee 'ing and 'the electrode; a valve'b e d upon the'lipper "end of the plgctrodeahd Siting." z

P g a duct, of- & pressur'fin cato :abarrel communicating ;wi th I,

u ct andlhaviing afplunger therin, an en-" larged barrel into which the 'jcts5 a spring-in the enls ur-gml v ,mg .the outward movementpf the plunger, said batrel'having a ribjormedvthe'r eon, the 1 i ta e o fwhicfiis' gradugited, a slide" mounted upon said rib and 00115 a 'ndcoacting with the g duat10ns',.-said" 1- having aflqg, a'fingerzcar 9; A spark in'gl mountfor hol dingk'the .ilj'dkatqrfi n its projected p0 p b i a gM i said duct, =s'a id means p :yytheb, .7 v lungeriproarrel msisb uti ng an indicator he com un a, lshedvbetween the press 

